Within chromosomes, DNA is wrapped around proteins called
a. karyotypes.
b. chromatids.
c. nucleosomes.
d. centromeres.
e. histones.
e
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Many male birds will expend a great deal of
energy building nests. Females will mate with the males who build the best nests. This is best described as an example of
a. natural selection. b. sexual selection. c. runaway selection. d. the Red Queen effect. e. disruptive selection
Which type of bacterium would not be able to survive in the presence of oxygen?
a. obligate aerobic b. obligate anaerobic c. facultative aerobic d. facultative anaerobic e. facultative autotrophic
Cold weather can change what aspect of a Himalayan rabbit?
A. genotype B. sex C. rate of genetic mutations D. phenotype E. alleles
A rash that starts on the (face/hands/torso) and spreads to the rest of the body is characteristic of chickenpox.
Fill in the blank(s) with the appropriate word(s).